/*
	Author: mingxuan li
*/

var m4, m4Roads;

function pickLastM4(arrayOfFiles){
	getM4(arrayOfFiles[arrayOfFiles.length-1]);
}

function getM4(m4File){
	m4 = parseJSON(m4_url+m4File);
}

function getM4Roads(){
	m4Roads = m4.features;
}